<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>

      <el-steps :space="200" :active="parseInt(activeIndex)" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_name">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item v-for="item in manyTableData" :label="item.attr_name" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item v-for="item in onlyTableData" :key="item.attr_id" :label="item.attr_name">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :headers="headerObj"
              :on-success="handleSuccess"
              :file-list="fileList"
              list-type="picture"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
			  <quill-editor v-model="addForm.goods_introduce"></quill-editor>
			  <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
		  </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <el-dialog title="图片预览" :visible.sync="previewVisiable" width="50%">
      <img :src="previewPath" alt="" class="previewImg">
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'

export default {
	data() {
		return {
			cateList: [],
			cateProps: {
				expandTrigger: "hover",
				label: "cat_name",
				value: "cat_id",
				children: "children",
				multiple: false
			},
			activeIndex: 0,
			addForm: {
				goods_name: "",
				goods_price: 0,
				goods_weight: 0,
				goods_number: 0,
				goods_cat: [],
				pics: [],
				goods_introduce:'',
				attrs:[]
			},
			addFormRules: {
				goods_name: [
					{ required: true, message: "请输入商品名称", trigger: "blur" }
				],
				goods_price: [
					{ required: true, message: "请输入商品价格", trigger: "blur" }
				],
				goods_weight: [
					{ required: true, message: "请输入商品重量", trigger: "blur" }
				],
				goods_number: [
					{ required: true, message: "请输入商品数量", trigger: "blur" }
				],
				goods_cat: [
					{ required: true, message: "请输入商品分类", trigger: "blur" }
				]
			},
			manyTableData: [],
			onlyTableData: [],
			uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
			headerObj: {
				Authorization: window.sessionStorage.getItem("token")
			},
			fileList: [],
			previewPath: "",
			previewVisiable:false
		};
	},
	created() {
		this.getCateList();
	},
	methods: {
		async getCateList() {
			const { data: res } = await this.$http.get("categories");
			if (res.meta.status !== 200) {
				return this.$message.error("获取商品分类数据失败");
			}
			this.cateList = res.data;
			this.$message.success("获取商品分类数据成功");
			// console.log(this.cateList);
		},
		handleChange() {
			if (this.addForm.goods_cat.length !== 3) {
				this.addForm.goods_cat = [];
			}
			// console.log(this.addForm.goods_cat);
		},
		beforeTabLeave(activeName, oldActiveName) {
			// console.log(oldActiveName);
			// console.log(activeName);
			if (oldActiveName == "0" && this.addForm.goods_cat.length !== 3) {
				this.$message.error("请先选择商品分类");
				return false;
			}
		},
		async tabClicked() {
			if (this.activeIndex == "1") {
				const { data: res } = await this.$http.get(
					`categories/${this.cateId}/attributes`,
					{
						params: {
							sel: "many"
						}
					}
				);
				if (res.meta.status !== 200) {
					return this.$message.error("获取动态参数失败");
				}
				res.data.forEach(item => {
					if (item.attr_vals == "") {
						item.attr_vals = [];
					} else {
						item.attr_vals = item.attr_vals.split(" ");
					}
				});
				this.manyTableData = res.data;
				// console.log(res.data);
			} else if (this.activeIndex == "2") {
				const { data: res } = await this.$http.get(
					`categories/${this.cateId}/attributes`,
					{
						params: {
							sel: "only"
						}
					}
				);
				if (res.meta.status !== 200) {
					return this.$message.error("获取静态属性失败");
				}
				this.onlyTableData = res.data;
				// console.log(res.data);
			}
		},
		handlePreview(file) {
			// console.log(file);
			this.previewPath = file.response.data.url;
			this.previewVisiable=true;
		},
		handleRemove(file) {
			// console.log(file);
			const filePath = file.response.data.tmp_path;
			const i = this.addForm.pics.findIndex(x => x.pic === filePath);
			this.addForm.pics.splice(i, 1);
			// console.log(this.addForm);
		},
		handleSuccess(response) {
			// console.log(response);
			const picInfo = { pic: response.data.tmp_path };
			this.addForm.pics.push(picInfo);
			// console.log(this.addForm);
		},
		add(){
			// console.log(this.addForm);
			this.$refs.addFormRef.validate(async valid=>{
				if(!valid){
					return this.$message.error('请填写必要的表单项');
				}

				const form=_.cloneDeep(this.addForm);
				form.goods_cat=form.goods_cat.join(',');

				this.manyTableData.forEach(item=>{
					const newInfo={attr_id: item.attr_id, attr_value: item.attr_vals.join(' ')};
					this.addForm.attrs.push(newInfo);
				});

				this.onlyTableData.forEach(item=>{
					const newInfo={attr_id: item.attr_id, attr_value: item.attr_vals};
					this.addForm.attrs.push(newInfo);
				});
				form.attrs=this.addForm.attrs;
				// console.log(form);

				const {data:res}=await this.$http.post('goods', form);
				if(res.meta.status!==201){
					this.$message.error('添加商品失败');
				}
				this.$message.success('添加商品成功');
				this.$router.push('/goods');
			})
		}
	},
	computed: {
		cateId() {
			if (this.addForm.goods_cat.length == 3) {
				return this.addForm.goods_cat[2];
			}
			return null;
		}
	}
};
</script>

<style lang="less" scoped>
.el-checkbox {
	margin: 0 10px 0 0 !important;
}

.previewImg {
	width: 100%;
}

.btnAdd {
	margin-top: 15px;
}
</style>